private void ReconcilePreconditions(UseCase src, UseCase dest)
{
// delete any use cases that are no more
var deletes = dest.Preconditions.Where(a => !src.Preconditions.Select(b => b.Id).Contains(a.Id)).Select(a => a.Id).ToList();
foreach (var preconditionId in deletes)
{
var precondition = dest.Preconditions.Where(a => a.Id == preconditionId).FirstOrDefault();
dest.Preconditions.Remove(precondition);
}
foreach (var precondition in src.Preconditions)
{
if (precondition.Id == 0)
{
dest.AddPrecondition(precondition);
}
else
{
var existingPrecondition = dest.Preconditions.Where(a => a.Id == precondition.Id).FirstOrDefault();
if (existingPrecondition != null)
{
existingPrecondition.Description = precondition.Description;
}
}
}
}